UPDATE: As of 6:45 p.m., Northeast Corridor trains were operating on or close to schedule between Princeton Junction and Metropark.

Problems with the switches that control the movement of trains were forcing NJ Transit trains on the Northeast Corridor Line toward New York to bypass New Brunswick, Edison and Metuchen for a short time tonight.

As of 6:15 p.m., passengers were boarding normally at the stations, but the New York-bound trains were subject to delays of up to 20 minutes.

For a time, passengers traveling to New York were being told to first board a train to Princeton Junction and then transfer to a New York-bound one.

The ongoing congestion on America’s busiest rail line was causing delays.